On the Critical Behavior of Gapped Gravitational Collapse in Confined Spacetime

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（7）
• 页码范围: 67-75
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/0253-6102/68/1/67

摘要

The gravitational collapse of a massless scalar field enclosed with a perfectly reflecting wall in a spacetime with a cosmological constant A is investigated.The mass scaling for the gapped collapse MAH-Mg∝ (ec-e)ξ is confirmed and a new time scaling for the gapped collapse TAH-Tg ∝ (∈c-∈)ξ is found.For both the critical exponents,we find strong evidence to show that they are non-universal.Especially when A ≠ 0,we find that both of these two critical exponents depend on the combination AR2,where R is the radial position of the reflecting wall.We find an evolution of the critical exponent ξ from 0.37 in the confined asymptotic dS case with AR2-1.75 to 0.68 in the confined asymptotic AdS case with AR2 =-1.75,while the critical exponent ξ varies from 0.10 to 0.26,which shows that the new critical behavior for the gapped collapse is essentially different from the Choptuik's case.